Answer:
30 cays
Explanation:
California law establishes a 30 day notice period when a landlord wants to terminate tenancy, including a tenancy that doesn't require a monthly payment like Wayne's situation.
Only a limited number of reasons would allow Bruce to make a shorter notice and they are all very serious issues, e.g. if Wayne did something illegal in the property like selling drugs, or destroyed or damaged severely some part of the property.